1, 5, 13, 65
5 and 13 are prime.
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No 65 is not prime since it has factors of 1 and 65 or 1*65=65 and 5 and 13 or 5*13=65. Prime numbers have only 1 and that number as its factors.
Prime factorization of 45 is 3x3x5. Prime factorization of 65 is 5x13.
To find the factors of a number you should first break that number down into its prime factors. In this case 65 can be broken down as: 65 = 5x13 To find any other factors, you then multiply any combination of these prime factors together. In this case, the factors of 65 come out as: 1, 5, 13 and 65.
How about: 5*13 = 65 as a product of its prime factors
They are 5 and 13